Question: What is the language official of Luhansk, whose Linguasphere code is 53-AAA-ea?
Paraphrase: What is the language reliable of Luhansk, whose Linguasphere code is 53-AAA-ea?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q134279 wdt:P37 ?answer . ?answer wdt:P1396 ?x FILTER(contains(?x , '53-AAA-ea'))}
Answer: Russian